Sterling Silver Double-faced Round Ball Simulated Pearl Clear Crystal CZ Drop Stud Earring Pair METAL: .925 sterling silver (Hypoallergenic) STYLE: 8mm/10mm Designer Double-faced Disco Round Ball Clear Crystal CZ Dangle Drop Stud Earring Pair FRONT STUD: 8mm BOTTOM STUD: 10mm A must have for your earring collection!